In addition to being capable of modelling large particles incorporated in an arbitrary layered medium, made of isotropic or anisotropic materials, the in-house code used here implements the supercell method, that is an artificial periodization of the electromagnetic problem, wherein each supercell can contain a large number of particles [Fig. REF ] to cope with finite-size effects. Technical details on the implementation can be found in Ref. [1]}. The numerical code has been used successfully in several recent studies [2]}, [3]}, [4]}, [5]}.
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